package com.config;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;

/**
 * Web层日志切面
 */
@Aspect
@Component
public class WebLogAspect {

    private static final Logger logger = LoggerFactory.getLogger(WebLogAspect.class);

    /**
     * 定义切入点，切入controller包下面的所有方法
     */
    @Pointcut("execution(public * com.controller..*.*(..))")
    public void webLog(){}

    /**
     * 前置通知，方法调用前被调用
     * @param joinPoint
     */
    @Before("webLog()")
    public void doBefore(JoinPoint joinPoint) throws Throwable {
        // 接收到请求，记录请求内容
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        if (attributes != null) {
            HttpServletRequest request = attributes.getRequest();
            
            // 记录下请求内容
            logger.info("HTTP请求: URL={}, Method={}, IP={}, ClassMethod={}, Args={}", 
                    request.getRequestURL().toString(),
                    request.getMethod(),
                    request.getRemoteAddr(),
                    joinPoint.getSignature().getDeclaringTypeName() + "." + joinPoint.getSignature().getName(),
                    Arrays.toString(joinPoint.getArgs()));
        }
    }

    /**
     * 后置通知，方法调用后被调用
     * @param ret
     * @throws Throwable
     */
    @AfterReturning(returning = "ret", pointcut = "webLog()")
    public void doAfterReturning(Object ret) throws Throwable {
        // 处理完请求，返回内容
        logger.info("HTTP响应: Response={}", ret);
    }
}